Dark Universe is a film in development that's part of the DC Extended Universe which features the team up of Deadman, The Spectre, Swamp Thing, John Constantine, Phantom Stranger, Zatanna, Zatara, and Sargon as well as Etrigan the Demon.

Guillermo del Toro (Hellboy, Pacific Rim) will soon begin work on a DC Comics adaptation for Warner Bros. called Dark Universe, and it will bring together some of the most well-known supernatural characters from that comic book universe, including:

Might be one of the untitled DC films set for October 2018 or November 2019.

Guillermo del Toro has been working on the film since 2012 in development.

Anton Arcane is likely to be the villain, while searching for centuries ancient books of demons. Also Anton Arcane is responsible for turning Alec Holland into Swamp Thing from the start; similar to in Swamp Thing from 1982.

This will be a live-action film of Justice League Dark called Dark Universe.

The characters are rumored to be John Constantine, Zatanna, Deadman, Swampthing and Madame Xanadu.